#!/usr/bin/env python
# -*- coding:utf-8 -*-

# file:do_moduler.py
# author:张世航
# datetime:2024/11/1 10:40
# software: PyCharm
"""
this is function  description 
"""
# import module your need

PI = 3.14


def main():
         print("PI:", PI)

if __name__ == "__main__":
    main()